Valve for fire-extinguishing sprinkler systems



\ April 2 1928.

E TYDEN VALVE FOR FIRE EXTINGUiSHING SPRINKLER SYSTEIS med Jan. 39. 19 24 .Z'mzff 649m leis Fatented Apr. 3, 1928,

EMIL TYDEN, 0F EVANSTON, ILDDTOIS.

VALVE FOR FIRE -EXTINGUISHINQ SPRINKLER SYSTEMS.

Application filed January 29, 1924. Serial No. 689,355.

The purpose of thisinvention is to provide an improved construction of a main valve body and parts accessory theretoof a fire extinguishing sprinkler system. It consists in the elements and features of construction shown and described as indicated in the claims. l

In the drawings 1- V Figure 1 is an axial section of the main valve body and immediate connections with the main supply pipe.

Figure 2 is a plan view of the main valve seat, as seen with the main valve body and valve removed from the terminal of the main supply pipe.

Figure 3 is a detail section in the plane of the section of Figure 1, showing a detail modification,

In the drawings the main valve'body is shown at 10 mounted upon the terminal 11 of the main supply pipe indicated at 12. 13 indicates the. pipe line leading from the outlet of' the valve body to the sprinkler system. 14 is the main valve controlling the inlet from the main supply pipe to the valve body and thence to the sprinkler system. This valve is hinged at one side for swinging up from its seat at the opposite side, and for the purpose of the present invention there is provided a valve seat member 16 which is. circular in its exterior outline and" is clamped between the similar circular marginal portions 10 and 11 of thevalve body 10 and supply pipe terminal 11 respectively, which are secured" together, clamping the 7 said valve seat member between them by means of bolts 15. r The three parts at this clamped junction are machined for watertight fit upon each other requiring no packing between them. The valve seat member 16 is provided with suitable hinge lugs 16, 1b to which the main inlet valve 14 is connected by means of corresponding hinge lugs 14*, corresponding lugs in the two parts being connected by a hinge pintle 14*.

For serving an auxiliary device such as an alarm operated by a water motor or by flow of water, it is necessary to provide a duct leading from a point at which it will receive water escaping from the supply pipe 12 through the terminal 11, and the main valve seat opening upon the initial opening movement of the main valve; and for thispur pose an auxiliary duct 32 is formed inthe valve seat member 16, leading from its in let, which is in the plane of the valve seat,

and preferably at apoint diametrically oppositethe hinge pivot of the main valve, out substantially radially with respect to said valve seat, opening at the periphery of the valve seat member exposed between clam-ping margins 16 and 11 of the valve bod'yand supply pipe terminal, said valve seat member being formed with a slightly projecting nipple, 16", at the position in its exposed periphery through which said duct extends. Said nipple is exteriorly threaded for coupling to it a pipe member 33 for leading to the auxiliary device which is to be served by the connection with the duct 32.

The duct 32 is controlled at its. inlet by an auxiliary valve 19, which is carried by the main valve, as seen in Figure. 1, said auxiliary valve being mounted directly in the main valve at the. side thereof opposite the hinge line, theinou-nting of said valve being in such manner as to adapt it to accommov transaxially of said auxiliary valve, and r in which bore it is yieldinglypressed in the direction for seating, by aspring 40,. the bore in which the valve and its spring are positioned being closed water tight at the end opposite that in which the valve'stands, by a screwed-in plug 41 against which the spring re-ae'ts for yieldingly thrusting the valve to its seat.

The important function served by the construction above described as comprising the auxiliary duct leading outthrough the exposed periphery of the valve seat member which is clamped between the valvev body and the water supply pipe terminal, is, that by reason of the fact that the valve seat member 16 isheld in junction with the: valve body and the water supply pipe terminal without threaded-joints between any of said three parts leading into the cavities of either of them, no leakagewhich may occur or be observed can be attributed to the leakage which is liable to-occur through any threaded junction; and the possibility of leakage is therefore limited tothe seating of the auxiliary valve 19. The special importance of this arises from the well-known fact that in any structure ofthis general character, in which there is an auxiliary duct forv like purposes for which the auxiliary duct in this construction'is provided+ operatlng an alarm or the l1ke1t 1s the common experience that leakage 1s observed which, in constructions involving threadediliary valve,it is essential, when such leakage is observed, to ascertainwliether it is due to the valve, or to the screw threads; andin such constructions it is necessary to exhaust thesystem and ge access through the main body to the auxiliary valve, and to remove the. same for dressing it, or otherwise getting accessto its seatto insure that no leakage can occur past this valve. In a large percentage of instances in which this elaborate and laborious attention is necessary in such constructions, the trouble is not with the auxiliary valve, but with the screw threaded joints, so that it this could have beenassuredly known, the large amount of repair work andattention would have been avoided. Int-he construction herein shown and described theabsence of threaded joints leading to any source of water for leakage makes it certain that it leakage is observed, it occurs by reason of poor seating-oi the valve which controls the auxiliary duct, and no time or labor is therefore liable to be wasted by reason oi? uncertainty as to the causeoit' leakage.

The main valve and its seat, including the auxiliary valve and itsseat, being constructed as a unitary structure which may be separated from between the main valve body and the'wa-ter inletpipe terminal, all work upon 'either valve, or upon the peripheral clamping areas 0:55 the valve seat member, can be done at the bench, where perfectly convenient access can be had to the parts requiring attention; andno work of this sort has to be done through the main valve hand-hole 18, as is unavoidable in many constructions of this general type. i

In Figure 3 there is shown a detail modification consisting in that the main valve seat member, 16 interposed and clamped between the supplypipe terminal, 11 and the main valve body, isdimensioned diametrically only for comprising the main inlet valve seat, and said peripheral flange for clamping between the other two members mentioned, and is not dimensioned for containing the auxiliary ductexcept as to the inlet end thereof seen at 30 the remainder of said auxiliary duct being tormedas seen at 3.0 through the flange, 11, of the supply pipe terminal, 11 In this construction the requirement that all connections leading from any water 7 space shall contain no threaded joint, is met, and said duct is made non-leaking at any point in its extent between the seat of the valve which controls it and the outside of the valve body, by the clamping of the Valve seat member 1b between the two adjacent parts of the structure, whichclamping clamps the mem-, ber 16 securely water-tight at the point at which the duct terminal 3O therethrough registers with the remainder of the duct 30 in the flange of the supply pipe terminal.

1. In a construction of the class indicated a main valve body and an immediately antecedent water pipe element on which said valve body is mounted at the intake or the latter; a valve seatmember peripherally dimensioned to r clampingengagement between the facing surfaces of said valve body and pipe element marginal with respect to the registering apertures of said parts; and

means for securing the valve body and pipe element together adapted for clamping said valve seat between said marginal area's, said valve seat member being dimensioned as to. thickness tor exposing a substantial width of peripheral area outwardly bet-ween the two members between which it is clamped, said valve seat member having formed in it an auxiliary duct opening at the inner end in the direction toward the seating movement of the main valve and opening at thev outer end through the exposed periphery. of said valve seating member, and a valve carried by the main valve for controlling the inner end of said duct. i

2. In a construction of the class indicated a main valve body and an ii'nmediately antecedent water pipe element on which said valve body is .mounted at the intake of the latter; a uilve seat member peripherally dimensioned for clamping engagement I be tween the facing surfaces of said valve body and pipe element marginal with respect to the registering apertures of said partsjand means for securing the valve body and pipe element together for'clamping said valve seat member between said marginal areas; an auxiliary duct leading from the inner side of said valveseat member, extending past the marginal seat otthi. valve seat member on the water inlet member, and terminating for discharge through an exteriorly-exposed area. of one of said two last mentioned members, and a valve operated by'the main valve llli for opening and closing simultaneouslyq therewith'itor controlling"water access to said auxiliary duct.

V ljn testimony whereof, Iliave hereunto set my hand at Chicago, Ill, this 26th day oi January, l9242i nM TYnnn. 

